Extending Datalog to Express Functional Queries: A Language and its Implementation.
Stefano BastaSergio FlescaSergio GrecoPublished in: APPIA-GULP-PRODE (1998)
Keyphrases
- query language
- relational calculus
- functional language
- expressive power
- relational query languages
- database query languages
- programming language
- query evaluation
- query processing
- database
- deductive databases
- function free horn
- relational algebra
- specification language
- logic programming
- database languages
- query answering
- web search engines
- data model
- functional programming
- xml query languages
- recursive programs
- execution engine
- natural language
- integrity constraints
- retrieval systems
- efficient execution
- aggregate functions
- query containment
- pattern languages
- datalog queries
- transitive closure
- language learning
- visual query language
- data sources